- A.To store visitors’ information on the web site.
- B.To record a tracking number of each visitor.
- C.To inform users on all their visits.
- D.To tell the site a lot about the visitors.
- A.through small data files established in the user’ s computer
- B.the first time an online shopper uses a unique tracking number
- C.when the shopper conducts a transaction online
- D.from Web profiles bought on the market
- A.may indicate his economic status
- B.may make it harder for him to get insurance
- C.may suggest his brand preference
- D.may reveal the web sites he often visits
- A.They are able to express the deepest feelings.
- B.They just listen quietly without any comments.
- C.They do not show signs of stress themselves.
- D.They can resemble human emotions.
- A.Of particles with extremely short lifetimes.
- B.Nearly as described but not completely.
- C.Not physically existing but produced by a computer.
- D.Of points where rays meet if produced backward.
- A.pets help the owners survive their diseases
- B.isolated people outnumber pet owners in developing a heart disease
- C.owning a pet actually cures the owner’ s diseases
- D.pets make little difference for patients’ recovery
- A.one’ s mental state has nothing to do with his physical well-being
- B.people who keep pets have no chance of getting heart disease
- C.pets bring about health hazards to their owners
- D.one’ s mental state has much to do with his physical health
- A.rarely experience headache, backache and flu
- B.suffer only from minor health problems
- C.have little cholesterol in their blood
- D.are usually free from heart disease
- 23
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According to the last paragraph, what does de Neve want to clarify about their research findings?
- A.Different genes play different roles: one type of gene can’ t take the place of other genes.
- B.The same gene that affects credit-card debt may also increase the risk of breast cancer.
- C.The low version of MAOA gene is bound to leave people heavily in debt.
- D.The low version of MAOA gene alone may not necessarily result in overspending.
- A.A neuro-transmitter.
- B.A gene.
- C.An enzyme.
- D.A brain cell.
- A.The way we deal with money is related to our genetic features.
- B.A particular gene affects financial behavior outside the lab.
- C.Adolescents’ genetic grouping affects their health.
- D.Too much MAOA may cause someone to behave impulsively.
- A.People with two different MAOA genes run a greater risk of carrying debt than those with two low MAOA genes.
- B.How much MAOA can be produced by brain cells depends on what versions of MAOA genes a person has.
- C.People with two high MAOA genes are less likely to make ends meet than those with two different MAOA genes.
- D.How much MAOA can be produced by brain cells is related to how many MAOA genes a person has.
- A.credit-card debt is mainly attributed to high interest rates
- B.reckless spending is a major cause of a person’ s debt
- C.young adults tend to spend more money than they earn
- D.whether we overspend or not is probably determined by a particular gene
- A.the sight of the lights was amusing
- B.they succeeded in “switching on” the lights
- C.they didn’ t need to turn back to watch the lights
- D.the lights went on and off quickly
- A.a basic human desire to understand and control the world
- B.the satisfaction of certain physiological needs
- C.their strong desire to solve complex problems
- D.a fundamental human urge to display their learned skills
- A.would continue the simple movements even without milk
- B.would begin to make learned responses even without milk
- C.would carry out learned movements when it had enough to drink
- D.would turn its head to right or left when it had enough to drink
- A.be praised
- B.please the researcher
- C.be rewarded with milk
- D.have the lights turned on
- According to the author, babies learn to do things which __________.
- A.are directly related to pleasure
- B.will meet their physical needs
- C.will bring them a feeling of success
- D.are good for their psychological development
- A.He would do it when the author lay still with his eyes closed.
- B.He would do it only when the food looked inviting.
- C.He would do it when he was not allowed to get the food.
- D.He would do it only when he was hungry.
- A.Milk and juice.
- B.Ripe bananas.
- C.Bread and butter.
- D.Boiled fish.
- A.was restless and excited
- B.had a good appetite for wild berries
- C.was anxious to be cared for
- D.ate few berries and plantains
- A.He liked to climb upon the author and scream in his breast.
- B.He liked to be petted and fondled by the author.
- C.He liked to chase the author about when he was very excited.
- D.He liked to play balls with the author in front of the house.